Shipments to the United States
Due to changes in U.S. customs regulations, all shipments to the United States are now subject to customs clearance.
This means that the recipient will be required to pay customs duties, as well as any applicable taxes and fees upon import.
Please also note that delivery may be delayed while the shipment is being processed by U.S. customs.
![Cover for Sifeng Liu · Grey Systems Analysis: Methods, Models and Applications - Series on Grey System (Hardcover Book) [Second Edition 2025 edition] (2024)](https://imusic.b-cdn.net/images/item/original/265/9789819787265.jpg?sifeng-liu-2024-grey-systems-analysis-methods-models-and-applications-series-on-grey-system-hardcover-book&class=scaled&v=1750857107)
![Cover for Sifeng Liu · Grey Data Analysis: Methods, Models and Applications - Computational Risk Management (Paperback Book) [Softcover reprint of the original 1st ed. 2017 edition] (2018)](https://imusic.b-cdn.net/images/item/original/583/9789811094583.jpg?sifeng-liu-2018-grey-data-analysis-methods-models-and-applications-computational-risk-management-paperback-book&class=scaled&v=1614704963)
![Cover for Sifeng Liu · Grey Data Analysis: Methods, Models and Applications - Computational Risk Management (Hardcover Book) [1st ed. 2017 edition] (2016)](https://imusic.b-cdn.net/images/item/original/404/9789811018404.jpg?sifeng-liu-2016-grey-data-analysis-methods-models-and-applications-computational-risk-management-hardcover-book&class=scaled&v=1486515899)
![Cover for Sifeng Liu · Grey Systems: Theory and Applications - Understanding Complex Systems (Paperback Book) [2011 edition] (2014)](https://imusic.b-cdn.net/images/item/original/321/9783642423321.jpg?sifeng-liu-2014-grey-systems-theory-and-applications-understanding-complex-systems-paperback-book&class=scaled&v=1437172725)
![Cover for Sifeng Liu · Grey Systems: Theory and Applications - Understanding Complex Systems (Hardcover Book) [2011 edition] (2010)](https://imusic.b-cdn.net/images/item/original/575/9783642161575.jpg?sifeng-liu-2010-grey-systems-theory-and-applications-understanding-complex-systems-hardcover-book&class=scaled&v=1408478871)
![Cover for Sifeng Liu · Grey Information: Theory and Practical Applications - Advanced Information and Knowledge Processing (Paperback Book) [Softcover reprint of hardcover 1st ed. 2006 edition] (2010)](https://imusic.b-cdn.net/images/item/original/932/9781849969932.jpg?sifeng-liu-2010-grey-information-theory-and-practical-applications-advanced-information-and-knowledge-processing-paperback-book&class=scaled&v=1408608108)
![Cover for Sifeng Liu · Advances in Grey Systems Research - Understanding Complex Systems (Hardcover Book) [2010 edition] (2010)](https://imusic.b-cdn.net/images/item/original/376/9783642139376.jpg?sifeng-liu-2010-advances-in-grey-systems-research-understanding-complex-systems-hardcover-book&class=scaled&v=1641698285)
![Cover for Sifeng Liu · Grey Information: Theory and Practical Applications - Advanced Information and Knowledge Processing (Hardcover Book) [2006 edition] (2005)](https://imusic.b-cdn.net/images/item/original/951/9781852339951.jpg?sifeng-liu-2005-grey-information-theory-and-practical-applications-advanced-information-and-knowledge-processing-hardcover-book&class=scaled&v=1647822080)